Ruler



FIG. 1 is a top and right front perspective view of a ruler showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top and right front perspective view thereof with the component in an alternative position. 

The ornamental design for a ruler, as shown and described. 